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  1. #define _CRT_SECURE_NO_WARNINGS
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. stack <string> sk;
  6. int main() {
  7. ios::sync_with_stdio(false);
  8. cin.tie(nullptr);
  9. //freopen(stdin);
  10.  
  11.       int n;
  12.       cin>>n;
  13.       if(n%2!=0)
  14.       {
  15.         cout<<"RA\n";
  16.       }
  17.       else
  18.       {
  19.       while(n--)
  20.       {
  21.         string s;
  22.         cin>>s;
  23.         bool flag=true;
  24.         if(s.substr(0,3)!="End")
  25.         {
  26.             sk.push(s);
  27.         }
  28.         else
  29.         {
  30.             if(s.substr(3)==sk.top())
  31.             {
  32.                 sk.pop();
  33.             }
  34.             else
  35.             {
  36.                 flag=false;
  37.                 break;
  38.             }
  39.         }
  40.       }
  41.       if(sk.size()==0)
  42.       {
  43.         cout<<"ACC\n";
  44.       }
  45.       else
  46.       {
  47.       cout<<"WA\n";
  48.       }
  49.     }
  50.  
  51. return 0;
  52. }
Success #stdin #stdout 0s 5308KB
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stdin
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Standard input is empty
stdout
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ACC
https://ideone.com/2pHVgs
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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